What factors determine whether a good is classified as an inferior good, and how does consumer behavior change when the price of an inferior good decreases?

Inferior goods are classified based on consumer behavior, specifically when demand for the good decreases as consumer income increases. When the price of an inferior good decreases, consumers may choose to buy more of it because they perceive it as a cheaper option compared to other goods. This change in consumer behavior is driven by the inverse relationship between the price of the good and consumer demand.